More news on this day
Indonesia’s Anak Krakatau volcano has erupted again, sending ash across western parts of the country, shutting eight airports and leaving more than 170,000 air passengers stranded as airlines and aviation authorities scramble to reroute or ground flights.
Get the latest news straight to your inbox!
Airports across western Indonesia grind to a halt
Volcanic ash from Anak Krakatau drifting over key air corridors prompted aviation authorities to suspend operations at eight airports across Java and Sumatra, including Jakarta’s main international gateway Soekarno Hatta and the capital’s secondary Halim Perdanakusuma field. Air navigation data and transport ministry updates indicate that airspace around these hubs was progressively restricted as ash clouds spread over the weekend and into Monday.
By Sunday evening, the closures had affected roughly 1,500 to 1,600 flights, with published tallies from multiple outlets converging on about 1,558 cancellations or severe delays and approximately 170,000 passengers stranded across the network. Coverage from international and Indonesian media notes that the affected services include hundreds of domestic connections as well as regional and long haul routes linking Jakarta to Singapore, Kuala Lumpur, the Middle East and Australia.
As ash persisted in the atmosphere, officials extended the shutdowns into a second day at several locations. Subsequent government briefings cited by local newspapers reported that the wider disruption had grown to nearly 3,000 flights and more than 270,000 affected passengers once knock on effects and diversions were included, underlining how quickly a local volcanic event can cascade through one of Asia’s busiest aviation systems.
Jakarta’s main airport and several others began phased reopening early Tuesday as updated monitoring showed safer conditions overhead, according to information on the Indonesian transport ministry’s website. Even as runways reopened, operators warned that backlogs, aircraft positioning challenges and crew duty limits would continue to affect schedules for at least another day.
Volcanic activity intensifies at Anak Krakatau
Anak Krakatau, a small but highly active volcanic island in the Sunda Strait between Java and Sumatra, entered a more energetic phase of activity late last week. Geological agency data cited in regional news coverage describe a continuous eruption that began on Friday and lasted roughly 25 hours, throwing ash columns tens of thousands of feet into the sky.
Plumes initially reached around 6,000 meters in height before subsequent bursts pushed ash up to about 15,000 to 20,000 feet and carried it northeast over Jakarta, Banten, West Java and nearby coastal waters. Monitoring network updates show a further short eruption on Sunday evening, with the most recent event logged at around 8:23 p.m. local time and continuing to feed ash into prevailing winds.
The volcano’s alert status has remained at Indonesia’s second highest level since mid year, reflecting sustained unrest. Anak Krakatau, whose name means “child of Krakatau,” grew from the caldera left by the cataclysmic 1883 Krakatau eruption. Its recent history includes a deadly 2018 partial flank collapse and tsunami that killed more than 400 people on the surrounding coasts, a legacy that ensures any escalation in its activity receives close scrutiny from scientists and disaster planners.
Current reports emphasize that the main hazard in this episode is airborne ash rather than lava flows or large pyroclastic surges. Even so, aviation protocols treat volcanic ash as a severe safety risk because it can damage jet engines, pit cockpit windows and interfere with instruments, making pre emptive airspace closures the default response when dense clouds are detected along flight paths.
Travelers face cascading delays and limited alternatives
With airports closed and aircraft grounded or diverted, passengers across Indonesia and the wider region have faced long queues, shifting departure boards and uncertainty over rebooking. Images and accounts published by local and international media show crowded terminals at Soekarno Hatta near Jakarta and at other affected airports as travelers waited for updates from airlines.
Transport ministry figures reported by national newspapers indicate that more than 450 flights and roughly 170,000 passengers were directly disrupted in the first 24 hours alone. As closures were prolonged into Monday, the tally of affected travelers rose sharply past 270,000 when delayed, rerouted and stranded passengers were included, with some carriers temporarily suspending Jakarta services from hubs such as Singapore’s Changi.
For domestic travelers, the shutdown of both Soekarno Hatta and Halim Perdanakusuma significantly reduced options, especially for last minute rerouting. Authorities encouraged airlines to use alternative airports where ash readings allowed, but limited seat availability and aircraft positioning constraints meant that many travelers had to accept extended waits or complex multi leg itineraries to reach their destinations.
Information from regional travel advisories and aviation trackers suggests that some flights operated via unaffected airports in central and eastern Indonesia, while others were rerouted entirely to avoid western Java airspace. However, the scale of the disruption meant that even passengers traveling to destinations far from the eruption zone experienced knock on delays as airlines reshuffled fleets.
Impact on regional and international routes
The Anak Krakatau ash cloud has underscored Indonesia’s central role in Southeast Asian air connectivity. Jakarta functions as a major transfer point linking domestic routes to long haul services across Asia, the Middle East, Oceania and Europe. When both of the capital’s airports reduce or halt operations, ripple effects are quickly felt in neighboring countries and beyond.
Data compiled in international coverage show that hundreds of services between Jakarta and regional hubs such as Singapore, Kuala Lumpur and Bangkok were among the first to be suspended as ash encroached on flight paths. Long haul flights connecting Indonesia with destinations in the Gulf, East Asia and Australia also faced diversions, carrying extra fuel for potential holding patterns or rerouting to secondary airports.
Some carriers opted to cancel services outright rather than operate around the ash clouds, particularly once it became clear that closures would stretch beyond a few hours. Aviation analysts quoted in publicly available reports note that such decisions balance safety considerations with operational and financial realities, since flying extensive detours around volcanic plumes can be both complex and costly.
The disruption has arrived at a time when Indonesia’s air travel market is still consolidating its recovery after the pandemic era downturn, amplifying concerns about resilience and contingency planning. Early assessments suggest that while safety protocols functioned as intended, communication gaps and crowd management challenges at some airports left many passengers frustrated and uncertain about their options.
What travelers should know now
As of Tuesday morning local time, updated statements from Indonesia’s transport ministry indicate that key airports including Soekarno Hatta in Banten, Halim Perdanakusuma in Jakarta and Husein Sastranegara in Bandung have formally reopened after ash levels in surrounding airspace declined. However, schedule normalization is expected to take time while airlines clear backlogs, reposition aircraft and manage crew rotations.
Travel advisories from major carriers and airport operators encourage passengers with upcoming flights to and from western Java, southern Sumatra and connecting hubs to check their flight status frequently and allow extra time at the airport. Many airlines are offering limited fee waivers or flexible rebooking for itineraries directly affected by the Anak Krakatau disruption, though the specifics vary by carrier and ticket type.
For travelers heading to popular Indonesian destinations beyond the immediate impact zone, such as Bali or central Java, available information suggests that airports there remain operational but may still see indirect disruption as planes and crews arrive late from Jakarta. Prospective visitors are being advised to monitor both airline updates and local news for the latest on route adjustments.
Volcanologists and civil protection agencies continue to monitor Anak Krakatau closely, and the potential for further ash emissions means that flight plans could change at short notice if winds shift or activity increases again. For now, publicly available data point to a gradual easing of the eruption, even as its impact on Indonesia’s aviation network lingers for travelers in the days ahead.
Indonesia volcano erupts again; 8 airports shut, over 170,000 passengers stranded
Travelers scramble as Anak Krakatau ash exposes gaps in contingency plans
Volcano in Indonesia erupts, canceling flights and stranding thousands
Volcanic island in Indonesia erupts, canceling flights and stranding thousands